Free ROI calculator. Calculate Return on Investment percentage from cost and return values. Instant results.
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ROI Calculator
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Formula
Formula
ROI = (Return − Cost) ÷ Cost × 100
Subtract initial cost from final return to get profit. Divide by initial cost and multiply by 100 for percentage. Positive = profit, negative = loss.
Frequently Asked Questions
What is a good ROI?+
A good ROI depends on the investment type. Stock market averages 7-10% annually. Real estate 8-12%. A business investment of 20%+ is generally considered good.
What is the difference between ROI and profit?+
Profit is an absolute dollar amount (Return − Cost). ROI is a relative percentage that allows comparison across different investment sizes.
How do I calculate ROI on a business?+
ROI = (Net Profit ÷ Total Investment) × 100. Include all costs — equipment, labor, marketing, overhead.